Reversing-gear for internal-combustion engines



J. F. VAN TUYL. REVERSING GEAR 'FOR INTERNAL COMBUSTION ENGINES. 7

APPLICATION FILED AUG. 13, I920.

1,391,706. Pammdsept.27,1921,

UNITED STATES JOHN F. VAN TUYL, 0F MINNEAPOLIS, MINNESOTA.

REVERSING-GEAR FOR INTERNAL-COMBUSTION ENGINES.

Specification of Letters Patent.

Patented Sept. 27, 1921.

Application filed August 13, 1920. Serial No. 403,360.

To all whom it may concern:

Be it known that I, JOHN F. VAN TUYL, a citizen of the United States,residing at 4236 Queen avenue south, Minneapolis, in the county ofHennepin and State of Minnesota, have invented a new and usefulReversing-Gear for Internal-Combustion Engines, of which the followingis a specification.

My invention relates to improvements in mechanism for guiding andmanipulating the push rods of cam and push rod valve gears; and theobject of my improvement is to simplify running parts.

I attain this object by the mechanism illustrated in the accompanyingdrawing, in which 1 is the cam shaft; 2, cams, with lobes severallyfitted for forward and back motion; 3, the cam end of push rods; 9, thevalve end push rods; 6, a rock lever; 7, guides; 10, valve stems; 4rotatable guides; 5, a movable harness; 8, a reverse lever.

The valve end of the push rod is connected with the rock lever operatingthe valve stem by a cup and ball joint or other form of universal joint;or, if the valve stem moves in the same direction with the push rod, isin guides, which may consist of a hollow cylinder containing the end ofthe valve stem and a ball on the end of the push rod. The cam end of thepush rod passes through the rotatable guide carried in the movableharness manipulated with the reverse lever. The connection of the pushrod with the harness may be of any kind that will allow the smalllateral oscillations of the push rod; the rotatable sphere bearing ischosen as a definite form for illustration.

I claim:

1. In an internal combustion engine, in combination with a cam havinglobes severally fitted for forward and back motion, a push rod having auniversal joint at the valve end and a rotatable guide carried in amovable harness near the cam end; and means for manipulating the same,substantially as described and for the purpose set forth.

2. In an internal combustion engine, the

combination of a rock lever and a push rod connected by a cup and balljoint, a rotatable 1 guide carried in a movable harness and a lever ,formanipulating the harness, and a cam having lobes severally fitted forforward and back motion, substantially as described and for the purposeSet forth.

JOHN F. VAN TUYL.

